Company lists · Data refreshed September 2026

Top 25 Energy consulting providers worldwide

RevenueBase identified 23,755 energy consulting providers worldwide as of September 2026 and tracks 405,361 professional contacts across them, including 118,543 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers energy consulting providers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026. Country and city lists for energy consulting providers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
23,755Companies
405,361Contacts tracked
118,543Verified emails
0Mobile numbers
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The 25 largest energy consulting providers worldwide

Ranked by team size
Top 25 of 23,755 energy consulting providers worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy consulting providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceCork, IrelandHQ checked Sep 16, 202610001+52,736 contacts →

Partial evidence

“Johnson Controls is a global leader in thermal management, mission-critical building systems, energy efficiency and decarbonization.”

Source: RevenueBase Database · checked Sep 16, 2026
2Partial evidenceSydney, AustraliaHQ checked Sep 16, 202610001+34,763 contacts →

Partial evidence

“Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.”

Source: RevenueBase Database · checked Sep 16, 2026
3Strong evidenceAberdeen, United KingdomHQ checked Sep 16, 202610001+26,949 contacts →

Strong evidence

“Wood is a global leader in consulting and engineering, delivering critical solutions across energy and materials markets.”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceWindsor, United KingdomHQ checked Sep 16, 202610001+9,238 contacts →

Indirect evidence

“Taking care of things.”

Source: RevenueBase Database · checked Sep 16, 2026
5Indirect evidenceSaint-andré-lez-lille, FranceHQ checked Sep 16, 202610001+8,427 contacts →

Indirect evidence

“Dalkia : ensemble, relevons le défi climatique!”

Source: RevenueBase Database · checked Sep 16, 2026
6Indirect evidenceDubai, United Arab EmiratesHQ checked Sep 16, 202610001+7,045 contacts →

Indirect evidence

“We design, build and maintain the assets that power the world for today and make it future-ready for tomorrow.”

Source: RevenueBase Database · checked Sep 16, 2026
7Partial evidenceDubai, United Arab EmiratesHQ checked Sep 16, 20265,001-10,0004,058 contacts →

Partial evidence

“Enova is the regional leader in integrated energy and multi-technical services, delivering comprehensive services to its clients.”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceMenasha, WI, United StatesHQ checked Sep 16, 20261,001-5,0002,741 contacts →

Partial evidence

“Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.”

Source: RevenueBase Database · checked Sep 16, 2026
9Partial evidenceLondon, United KingdomHQ checked Sep 16, 20261,001-5,0002,627 contacts →

Partial evidence

“We help businesses manage energy needs, boost efficiency, control costs and achieve decarbonisation goals for a better energy future.”

Source: RevenueBase Database · checked Sep 16, 2026
10Partial evidenceAustin, TX, United StatesHQ checked Sep 16, 20261,001-5,0002,121 contacts →

Partial evidence

“CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidence港区, JapanHQ checked Sep 16, 20265,001-10,0001,900 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
12Partial evidenceNoida, IndiaHQ checked Sep 16, 20261,001-5,0001,572 contacts →

Partial evidence

“STEAG Energy Services India, established in 2001 as a wholly owned subsidiary of STEAG GmbH, Germany, is now part of the Bluspring Enterprises Limited, India’s integrated…”

Source: RevenueBase Database · checked Sep 16, 2026
13Strong evidenceNeuilly-sur-seine, FranceHQ checked Sep 16, 20265,001-10,0001,496 contacts →

Strong evidence

“Vulcain Engineering Group is a multi-specialist engineering and consulting group serving industrial companies across the globe, focused on critical sectors: energy, health…”

Source: RevenueBase Database · checked Sep 16, 2026
14Partial evidenceFramingham, MA, United StatesHQ checked Sep 16, 20261,001-5,0001,383 contacts →

Partial evidence

“Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…”

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceOslo, NorwayHQ checked Sep 16, 20261,001-5,0001,150 contacts →

Indirect evidence

“GK er en ledende teknisk entreprenør og servicepartner.”

Source: RevenueBase Database · checked Sep 16, 2026
16Partial evidenceLondon, United KingdomHQ checked Sep 16, 20265,001-10,0001,064 contacts →

Partial evidence

“Together, we’re delivering technical solutions for a better society and an Electric Britain Dalkia is one of the UK’s leading technical and energy services providers at the…”

Source: RevenueBase Database · checked Sep 16, 2026
17Partial evidenceOxford, United KingdomHQ checked Sep 16, 2026501-1,0001,034 contacts →

Partial evidence

“Established in 2013, Aurora Energy Research is a leading global provider of power market forecasting and analytics for critical investment and financing decisions.”

Source: RevenueBase Database · checked Sep 16, 2026
18Partial evidenceEschborn, GermanyHQ checked Sep 16, 20261,001-5,0001,021 contacts →

Partial evidence

“Techem is a leading global energy service provider for the real estate sector and private homeowners.”

Source: RevenueBase Database · checked Sep 16, 2026
19Partial evidenceLondon, United KingdomHQ checked Sep 16, 20261,001-5,0001,007 contacts →

Partial evidence

“Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.”

Source: RevenueBase Database · checked Sep 16, 2026
20Partial evidenceAnaheim, CA, United StatesHQ checked Sep 16, 20261,001-5,000851 contacts →

Partial evidence

“Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.”

Source: RevenueBase Database · checked Sep 16, 2026
21Partial evidenceOakland, CA, United StatesHQ checked Sep 16, 2026201-500772 contacts →

Partial evidence

“Our mission is simple - to combat climate change through market-based, cost-effective energy, carbon, and water management solutions that make big impacts.”

Source: RevenueBase Database · checked Sep 16, 2026
22Partial evidenceHalf Moon Bay, CA, United StatesHQ checked Sep 16, 2026501-1,000733 contacts →

Partial evidence

“Resource Innovations (RI) is an energy transformation firm.”

Source: RevenueBase Database · checked Sep 16, 2026
23Strong evidenceHouston, TX, United StatesHQ checked Sep 16, 20261,001-5,000715 contacts →

Strong evidence

“For 25 years Capco’s Energy practice has combined innovative thinking with deep industry knowledge to provide business consulting, digital transformation and technology services…”

Source: RevenueBase Database · checked Sep 16, 2026
24Indirect evidenceSevilla, SpainHQ checked Sep 16, 20261,001-5,000688 contacts →

Indirect evidence

“INERCO, with 30 years of experience, offers comprehensive services and develops advanced technologies that contribute to sustainable industrial development, acting as a leader in…”

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceThane, IndiaHQ checked Sep 16, 2026501-1,000661 contacts →

Partial evidence

“M/s VIKRAN Engineering Ltd is a reputed and established engineering company specializing in providing comprehensive solutions in the fields of renewable energy, engineering…”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 23,755 energy consulting providers worldwide

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Energy consulting providers worldwide at a glance

As of Sep 16, 2026
29.2%Verified-email coverage
17.1Average contacts per company
1-10Median size (employees)
1.5%Largest-city concentration · London
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
14,505
11-50
6,930
51-200
1,652
201-500
330
501-1,000
90
1,001-5,000
90
5,001-10,000
12
10001+
21

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among energy consulting providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage
53 countries, largest first: the United States, France, Germany, the United Kingdom, Spain, Italy, Brazil, India, the Netherlands, Canada and 43 more. Country and city lists for energy consulting providers are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “energy consulting providers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names energy consulting providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among energy consulting providers, and records with no verified work email.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 118,543 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Energy consulting providers by location

120 lists · largest first

Every Energy consulting providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names energy consulting providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many energy consulting providers are there worldwide?

RevenueBase identified 23,755 energy consulting providers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Johnson Controls, headquartered in Milwaukee, tops this list with the largest team on record.

Which country has the most energy consulting providers?

The United States leads with 3,929 companies, followed by France (1,791) and Germany (1,788). Every energy consulting providers list by country and city is linked on this page.

Which city has the most energy consulting providers?

London leads with 349 headquartered companies, followed by Madrid (302) and Paris (263).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 118,543 verified decision-maker contacts tracked across these 23,755 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.